hi, would very much appreciate if the lovely people in the forum would help me with these Qs.
thanks

1. Am I supposed to get a whole set of tools like wrench, tyre nut removers, and other tools which comes with most Japanese cars, because I did not get any. The dealer said because I had runflats BMW didn't send any tools, is it true? Or did he trick me.

2. Can I replace runflats with regular non-bmw tyres? Given that they are the same size and specs? will it mess up the pressure sensors?

3. Can I add kenwood amplifiers to power a sub and two speakers, taking connections from the battery and the preouts from the factory amp?